Therapeutic applicator



Feb. 3, 1925.

C. H. VIOL THERAPEUTI C APPLI CATOR Filed Dec. 22 1921 s? r, l

gymmo@ Amm u tfozuags Patented Feb. 3, 1925.

`UNITED STATES PATENT OFFICE- CHARLES H. VIOL, OF PITTSBURGH,PENNSYLVANIA, ASSIGNOR TO STANDARD CHEMICAL COMPANY, 0F PITTSBURGH,PENNSYLVANIA.

THERAPEUTIC APPLICATOR.

Application filed December 22, 1921.

To all whom t may concern.'

Be it known that I, CHARLES H. VIoL, a citizen of the United States, anda resident of Pittsburgh, in the county of Allegheny and State ofPennsylvania, have invented certain new and useful Improvements inTherapeutic Applicators; and I do hereby declare the following to be afull, clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

rIhis invention relates to improvements in therapeutic applicators andmore particularly to simple and efficient means for holding the plaqueon which the radioactive material is supported.

One object of my present invention is to provide holding` or handlingmeans for the plaque supporting the radio-active material where saidmaterial is incorporated in a non-porous, vitreous or glassy substanceas disclosed in my former Patent No. 1,210,- 731 issued on the 2nd dayof January, 1917.

A further object is to overcome inconveniences encountered in providingfor a handle attachment directly to the plaque which carries theradio-active glaze.

With these and other objects in view, the invention consists in certainnovel features of construction as hereinafter set `forth and pointed outin the claims.

In the accompanying drawings, Figure l is a perspective viewillustrating my improvements. Figure 2 is a View in section showing theplaque containing the radioactive glaze in place in the holder, andFigure 3 is a view partly in section showing the manner in which theplaque may be discharged from the holder.

It has been found that when a handleattaching member is provideddirectly on the back Iof the metal plaque before the radio-active glazeis lirmed on (no matter how the plaque is supported), there will resulta curling back of the corners of the plaque, which is very undesirable.If the handle-attaching means be soldered on after the radio-activeglaze has been applied, the temperature of the soldering operation isliable to cause cracking of the glaze.

To avoid the inconveniences and objec- Serial No. 524,191.

tions above outlined, I have provided a holder for the plaque of theapplicator which carries the radio-active glaze.

In the drawing, I have shown the plaque at 1 as consist-ing of arecessed metal member which may be approximately square and have roundedside faces 2 and containmg radio-active glaze 3, such as disclosed in myformer patent, is contained. A holder is represented at 4 and mayconsist of sheet metal having flanges 5 at its side edges, a straightliange or back member 6, and an open front end 7. The side flanges 5 ofthe holder may be curved transversely to conform to the curved sideportions of the applicator plaque and serve to prevent displacement ofthe latter in one direction. In order to prevent accidental sliding ofthe applicator plaque in the holder 4, said plaque will be made to havesuch dimensions and the fianges 5 of the holder so spaced that when theplaque is inserted into the holder it will be held frictionally betweenthe side flanges 5 of the latter. In order to facilitate removal of theapplicator plaque from the holder without necessity for the operator toplace his thumb or finger against the radio-active glaze, the back wall6 of the holder is provided with a hole 8 through which a rod or tool 9may be passed as illustrated in Figure 3.

The back or bottom of the holder 4 is provided with a lug 10 which maybe xed thereto in any suitable manner and provided With a socket 1lhaving a threaded wall to receive the threaded shank of a handle 12.

Having fully described my invention what I claim as new and desire tosecure by Letters-Patent, is:

l. An applicator comprising a radioactive plaque, aholder thereforhaving a bottom or back member, side membersv and one end member, saidside members being curved to grasp the plaque and spaced apart suchdistance relatively to the diameter of the plaque that the latter willbe held frictionally in said holder, and means on the holder forconnecting a handle thereto.

2. Holding means for the radio-active plaque of an applicator,comprising a holder having side portions constituting In testimonywhereof, I have signed this frictional retaining means for the plaque,specification in the presence of two suband afhandie detgtchztblyeonneoted with an seribing Witnesses.

intermediate portion of the beek of' said CHARLES H. VIOJ. 5 holder andextending substantially perpen- Witnesses:

dcular to the face of the piaqure when in MAX MEUMARKER,

the holder. SEA/M4N.

